Mercurial > hg > nginx
comparison src/event/ngx_event_thread.c @ 208:0b67be7d4489
nginx-0.0.1-2003-12-08-23:48:12 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Mon, 08 Dec 2003 20:48:12 +0000 |
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207:6e0fef527732 | 208:0b67be7d4489 |
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1 | |
2 volitile int ngx_last_posted_event; | |
3 | |
4 | |
5 typedef struct { | |
6 ngx_tid_t tid; | |
7 ngx_cv_t cv; | |
8 } ngx_thread_data_t; | |
9 | |
10 static ngx_thread_data_t *threead_data; | |
11 | |
12 | |
13 | |
14 | |
15 | |
16 { | |
17 | |
18 err = ngx_thread_cond_wait(ngx_thread_data_cv, ngx_thread_data_mutex); | |
19 | |
20 tid = ngx_thread_self(); | |
21 | |
22 for (i = 0; i < thread_data_n; i++) { | |
23 if (thread_data[i].tid == tid) { | |
24 cv = thread_data[i].cv; | |
25 break; | |
26 } | |
27 } | |
28 | |
29 if (i == thread_data_n) { | |
30 error | |
31 return | |
32 } | |
33 | |
34 | |
35 for ( ;; ) { | |
36 | |
37 err = ngx_thread_cond_wait(cv, ngx_posted_events_mutex); | |
38 if (err) { | |
39 ngx_log_error(NGX_ALERT, log, err, | |
40 ngx_thread_cond_wait_n " failed, thread is exiting"); | |
41 return; | |
42 } | |
43 | |
44 for ( ;; ) { | |
45 ev = NULL; | |
46 | |
47 for (i = ngx_last_posted_event; i > 0; i--) { | |
48 ev = ngx_posted_events[i]; | |
49 | |
50 if (ev == NULL) { | |
51 continue; | |
52 } | |
53 | |
54 err = ngx_thread_mutex_trylock(ev->mutex); | |
55 | |
56 if (err == 0) { | |
57 ngx_posted_events[i] = NULL; | |
58 | |
59 while (ngx_posted_events[ngx_last_posted_event] == NULL) { | |
60 ngx_last_posted_event--; | |
61 } | |
62 | |
63 break; | |
64 } | |
65 | |
66 if (err == NGX_EBUSY) { | |
67 ev = NULL; | |
68 continue; | |
69 } | |
70 | |
71 ngx_log_error(NGX_ALERT, log, err, | |
72 ngx_thread_mutex_unlock_n " failed, | |
73 thread is exiting"); | |
74 | |
75 ngx_worker_thread_error(); | |
76 return; | |
77 } | |
78 | |
79 err = ngx_thread_mutex_unlock(ngx_posted_events_mutex); | |
80 if (err) { | |
81 ngx_log_error(NGX_ALERT, log, err, | |
82 ngx_thread_mutex_unlock_n | |
83 " failed, thread exiting"); | |
84 return; | |
85 } | |
86 | |
87 if (ev == NULL) { | |
88 break; | |
89 } | |
90 | |
91 ngx_event_handle_event(ev); | |
92 | |
93 err = ngx_thread_mutex_unlock(ev->mutex); | |
94 if (err) { | |
95 ngx_log_error(NGX_ALERT, log, err, | |
96 ngx_thread_mutex_unlock_n | |
97 " failed, thread exiting"); | |
98 | |
99 ngx_worker_thread_error(); | |
100 return; | |
101 } | |
102 | |
103 err = ngx_thread_mutex_lock(ngx_posted_events_mutex); | |
104 if (err) { | |
105 ngx_log_error(NGX_ALERT, log, err, | |
106 ngx_thread_mutex_lock_n | |
107 " failed, thread exiting"); | |
108 return; | |
109 } | |
110 } | |
111 | |
112 if (restart) { | |
113 ngx_log_error(NGX_INFO, log, 0, "thread is exiting"); | |
114 return; | |
115 } | |
116 } | |
117 } | |
118 | |
119 ngx_worker_thread_error() | |
120 { | |
121 ngx_err_t err; | |
122 | |
123 err = ngx_thread_mutex_unlock(ngx_posted_events_mutex); | |
124 if (err) { | |
125 ngx_log_error(NGX_ALERT, log, err, | |
126 ngx_thread_mutex_unlock_n | |
127 " failed, thread exiting"); | |
128 } | |
129 } |